When you look at the record in FamilySearch the ID number is shown next their name. It's usually 7 digit/alpha number. Eg. 3F45-2H5. If you can find the ID number of one of your family I can look at the record and see what you mean. I look forward to hearing from you and helping you.
There are many places that you can find the 'FamilySearch Identifier' (PID) of "Deceased" individuals/persons in "Family Tree" of 'FamilySearch' ...
Just some examples ...
Through the "Find" feature/facility/function ...
On the individual's/person's "Person/Details" page/screen ...
[ Not to mention at the END of the URL ]
On the individual's/person's "Pedigree" View ...
That said ...
Are you referring to the fact that you CANNOT find/see a 'FamilySearch Identifier' (PID) on a "Source" (ie. "Index" Record).
IF, that is the case; THEN, you will NOT ...
'FamilySearch Identifier' (PID) DO NOT appear on "Sources" (ie. "Index" Records).
'FamilySearch Identifier' (PID) ONLY get associated to "Sources" (ie. "Index" Records) when the "Source" (ie. "Index" Record) has been attached to (ie. associated with) an individual/person.
Here is a "Knowledge Article" in 'FamilySearch':
What are ID numbers used for in Family Tree?
Where it states:
An ID number (identification number) is a string of letters and numbers that uniquely identifies a record in Family Tree. It consists of 4 characters, a hyphen, and 3 more characters. For example: K8LL-TGB.
An ID number:
In Family Tree, you can use the ID number to:
I hope this helps.